libpcap on OSX

The other day I was playing with libpcap on my MacBook Pro. Every time I tried to run the code my wireless network connection was disconnected.

After a bit of playing around I also found this was happening with tcpdump. It appears that running tcpdump -i en1 where en1 is the wireless network interface works fine. I guess the problem is something to do with the call to scan for interfaces.

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